Building block



S. GANGMARK BUILDING BLOCK Filed Aug. 7, 1926 Patented Aug. 14, 1928.

UNITED STATES SEVERIN GANGMARK, orA SEATTLE, WASHINGTON.

BUILDING BLOCK.

Application led August 7, 1926. Serial No; 127,790.

verse vertical section of Fig. 1; Fig. 3 is a perspective View ofthe slab spacingand re- Y `inforcmgassembl such as employed 1n the completed block s own in Fig. 1; Fig. l is a detail horizontal section to a larger scale of portions of two blocks to illustrate the manner of bonding the same; Fig. 5 is a view, partly in front elevation and partly in section, of a portion of a building wall embod ing my improved blocks; and Fig. 6 is a p an view of Fig. 5, including part of a Window casing shown in horizontal section.

According to the present invention a building block is composed of two thin rectangular slabs 10 held in parallel spaced apart relation by means of transversely arranged bridge plates 11. The two slabs of a block are each formed to provide at its top a longitudinal tongue 12 protruding above horizontal shoulders 13; and in its4 lower edge a longitudinal groove 14 to receive the tongue of a block of a wall course next below.

Each end of a block is formed to provide a vertical groove 15 to receive mortar or other suitable plastic material as represented by 16 in Figs. 4 and 6.

The above referred to bridge plates 11, made of wood or other suitable material, are of less height than that of the associated slabs 10 and have their ends embedded in the latter. Said bridge plates are located, preferably, at about midheight of the associated slabs 10 of a block to afford spaces above and below the plates to accommodate horizontal timbers, such as 17 in Figs. 5 and 6 for example, said timbers being nailed or otherwise secured to the bridge plates and thus serve as reinforcing members of a wall.

The bridge plates, moreover, are each disposed to have its outer surface 18 1n a plane, or nearly so, with the plane of the respective ends of the companion slabs 10 of a. block,the grooves 15 in the latter being continued as at 151 through the bridge plates.

As shown in Fig. 3 the companion bridge plates 11 of a block are connected with each other by reinforcing rods 19 having hooked or looped ends, as 20, in engaging relation with anchor devices such as metal barsl 2l, nails or the like, which, inturn, engage in the plates. vThe rods 19 and the metal con- 4nections 21 of the plates are all embedded within they respective block slabs, and the material of the latter serves with the bridge plates to afford a monolithic block of great strength and durability. y

In the making of a block, the plastic concrete is'cast about a skeleton structure (Fig. 3) in a mold. The surface of the lslab member which is to` beiexposed may 4be finished in any desired manner.

An attractive finish is had by means of an outer layer 22 (Fig. 2) of suitably colored cement into which is pressed pieces of broken rock, glass or other substance which will produce a desired artistic or architectural effect.

In constructing a wall, the blocks ofthe inner and outer slab tiers are laid with lime or cement mortar, the planes of the joints "and which will be practically damp proof.

What I claim, is,- y

` 1. A building-block comprising two spaced apart concrete slab sections, wooden bridge plates having their ends embedded in the respective sections to receive fastenings for securing the adjacent blocks of a course thereof together, the outer surface of a y plate being in a plane with the outer ex'- tremity of the slab sections at each end of the block, grooves provided in the ends of the slab sections and extending across the respective plates, and tongues and grooves provided along the upper and lower longitudinal edges of the respective slabs.

2. In a building-block comprising two spaced apart concrete slab sections, bridge plates having their ends embedded in the slab sections, said plates being provided with recesses arranged to cooperate with the recesses of the plate of adjacent blocks to accommodate a bonding material for securing said blocks in longitudinal alignment with each other and reinforcing means embedded in said slabs and having their ends connected to the respectiveplates.

3. In a building-block having two cencrete slab sections, a bridge plate embedded in the concrete at each end of the block for retaining the slabs in parallel spaced apart relation, krods extending above and below each of the embedded portions of the plates, and longitudinally disposed reinforcing means provided within the slabs between said rods above and below the plates respectively of each slab;

4. In a building block, two concrete slabs, a rectangular bridge plate of less depth than the slabs having its ends embedded in the `slabs at each end ofthe block, and reinforcing means eoupling said bridge plates in longitudinally spaced apart relation within each slab.

5. In a building block having two concrete slab members','` plate members retaining the slab members in horizontally spaced apart relation to allord inner and outer surfaces ot' a wall, means extending longitudinally of the block in each of said slabs and cooperating with the embedded portioni-s of the plate members at both ends of the respective slabs for reinforcing the latter, the slab for the outer wall-surli'ace having pieces of rocks partially embedded therein.

6. ln a building-wall, in combination, a horizontal course of concrete slabs each containing horizontally aiida'ertically arranged reinforcing elements, said slabs being provided in the ends thereof with vertically disposed grooves, and means interposed between the successive slabs and engaging in the grooves thereof for uniting the slabs.

vSigned at Seattle, Vashington, this 12th day of J une 1926.

SEVERIN GANGMARK 

